Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001193125-21-197263-index-headers.html | 2021-06-23 16:06:09 | |
| 0001193125-21-197263-index.html | 2021-06-23 16:06:09 | |
| 0001193125-21-197263.txt | 2021-06-23 16:06:09 | |
 0001193125-21-197263-xbrl.zip | 18489 | 2021-06-23 16:06:09 |
| d159637d8k.htm | 26283 | 2021-06-23 16:06:09 |
| d159637d8k_htm.xml | 3274 | 2021-06-23 16:06:09 |
| d159637dex101.htm | 42986 | 2021-06-23 16:06:09 |
| FilingSummary.xml | 1731 | 2021-06-23 16:06:09 |
| Financial_Report.xlsx | 5673 | 2021-06-23 16:06:09 |
| MetaLinks.json | 18349 | 2021-06-23 16:06:09 |
| nfg-20210617.xsd | 2909 | 2021-06-23 16:06:09 |
| nfg-20210617_lab.xml | 17373 | 2021-06-23 16:06:09 |
| nfg-20210617_pre.xml | 10965 | 2021-06-23 16:06:09 |
| R1.htm | 38618 | 2021-06-23 16:06:09 |
| report.css | 2767 | 2021-06-23 16:06:09 |
| Show.js | 1084 | 2021-06-23 16:06:09 |